ocr: norizon. Along the rivers l1e large concentrations of viveiros, areas embracing nesting wading birds by the thousands. W e paddle to seeone - of the largest ones - - up close-awonderrul opportunity for careful obser- vations and superb nature pho- tography. Ihrougnout, we camp upon sandy beaches, with time to: swim, fish and enjoy our fan- tastic surroundings. Our group also visits Chapada dos Guimaraes, a rocky high- land region reminiscent of our own American Southwest, Iguaçu Falls, and the Golden Lion Tamarin Reserve, where an - international conservation program is battling to save this t ...